On Nov 16, 2009, at 12:40 PM, Tim Smith wrote:
Hi,
I wanted to make a graph with the following table (2 rows, 3 columns):
a b c
x 1 3 5
y 5 8 6
The first column represents the start cordinate, and the second
column contains the end cordinate for the x-axis. The third column
contains the y-axis co-ordinate. For example, the first row in the
matrix above represents the points (1,5),(2,5), (3,5). How would I
go about making a discontinuous graph ?
thanks!
coords <- read.table(textConnection("a b c
x 1 3 5
y 5 8 6"), header=TRUE)
plot(NULL, NULL, xlim = c(min(coords$a)-.5, max(coords$b)+.5),
ylim=c(min(coords$c)-.5, max(coords$c)+.5) )
apply(coords, 1, function(x) segments(x0=x[1],y0= x[3], x1= x[2],
y1=x[3]) )
--
David Winsemius, MD
Heritage Laboratories
West Hartford, CT
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